Charlie, Adam and Bryan have some stickers in the ratio of 10 : 2 : 3.
Charlie gives Adam and Bryan a total of 100 stickers.
Now they have same number of stickers.
- What is the total number of stickers that they have?
- What is the number of stickers that Charlie gives to Adam?
- What is the number of stickers that Charlie gives to Bryan?
|
Charlie |
Adam |
Bryan |
Before |
10 u |
2 u |
3 u |
Change |
- 5 u |
+ 3 u |
+ 2 u |
After |
5 u |
5 u |
5 u |
(a)
Total number of stickers
= 10 u + 2 u + 3 u
= 15 u
Number of stickers that each must have to be the same number
= 15 u ÷ 3
= 5 u
Number of stickers that Charlie gives away
= 10 u - 5 u
= 5 u
5 u = 100
1 u = 100 ÷ 5 = 20
Total number of stickers
= 15 u
= 15 x 20
= 300
(b)
Number of stickers that Charlie gives to Adam
= 5 u - 2 u
= 3 u
= 3 x 20
= 60
(c)
Number of stickers that Charlie gives to Bryan
= 5 u - 3 u
= 2 u
= 2 x 20
= 40
Answer(s): (a) 300; (b) 60; (c) 40